220019381649 has 32 divisors (see below), whose sum is σ = 331479319680. Its totient is φ = 144196113600.

The previous prime is 220019381629. The next prime is 220019381663. The reversal of 220019381649 is 946183910022.

220019381649 is a `hidden beast` number, since 2 + 200 + 1 + 9 + 381 + 64 + 9 = 666.

220019381649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220019381649 - 2¹² = 220019377553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220019381629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3055834 + ... + 3127004.

It is an arithmetic number, because the mean of its divisors is an integer number (10358728740).

Almost surely, 2^220019381649 is an apocalyptic number.

It is an amenable number.

220019381649 is a deficient number, since it is larger than the sum of its proper divisors (111459938031).

220019381649 is a wasteful number, since it uses less digits than its factorization.

220019381649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73118 (or 73112 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 220019381649 in words is "two hundred twenty billion, nineteen million, three hundred eighty-one thousand, six hundred forty-nine".